Relatives who were at the apartment complex pool Sunday said they saw Haven standing on the steps of the hot tub and then, “seconds later,” floating face-down in the tub, the Sheriff’s Office said.

Deputies believe the girl slipped.

The child’s mother was nearby but not at the pool at the time of the incident, according to Glen Boyd, a Sheriff’s Office spokesman. Boyd did not immediately respond to a request for information about the girl’s father.

Boyd said Haven was not wearing a life jacket or floaters at the time of the incident, which is under investigation.